tim n thuoc N de n+3/2n-2 nguyen
tim n thuoc N de A= 21n + 3 / 6n + 4 rut gon duoc
tim stn n de phan so 18n+3/21n+7 rut gon duoc
Tim n thuoc Z de phan so sau rut gon duoc:
4n+5/5n+4
Nho ghi cach lam nua nhe
Tim tat ca cac so tu nhien n > 0 de 4n + 5 / 5n + 4 co the rut gon duoc
Ai lam dung thi tick
Tim so tu nhien n de phan so A = 8n + 193 / 4n + 3 :
c) Voi gia tri nao cua n trong khoang tu 150 den 170 thi phan so A rut gon duoc.
tim so tu nhien x nho hon 63 de co the rut gon duoc phan so 63/x+1
tim tat ca cac so tu nhien n de phan so \(\frac{18n+3}{21n+7}\)co the rut gon duoc
tim n de cac phan so sau rut gon duoc
\(\frac{6n+8}{9n-3}\)
gap lam may bac oi giup em em**** cho